<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>表单域（了解）</title>
</head>
<body>
    <!-- 
        <form action="url地址" method="提交方式" name="表单域名称"
     -->
     <form action="demo.php" method="post" name="name1">

     </form>
     <!-- 
         1.在我们写表单元素之前，应该有个表单域把他们进行包含
         2.表单域时form标签
      -->
</body>
</html>